Piston ring compressor



FIG. 1 is a top perspective view of a piston ring compressor showing my new design;

FIG. 2 is a top plan view; and

FIG. 3 is a cross-sectional view taken along the line 3--3 in FIG. 1. "

The side and end not shown are like the side and end shown respectively, while the undisclosed bottom is conventional in appearance."O'Donnell; Patrick J.

3040 Connor St.

Salt Lake City

UT

84109

] 

The ornamental design for a piston ring compressor, as shown and described. 